-3- extent of the SWRHL field program (Chapter IV of the unclassified presentation). The results of our event-related surveillance program, except for certain isotopes (e.g., 3H ay.) are and not classified. It is the intent of this addendum to show that, under the circumstances of the NTS testing program, these "classified" isotopes are not the critical isotopes for public exposure. If the exposure from the radioiodines is kept below the FRC guidelines, then the exposures due to tritium and nee) be only a fraction of the guideline values. pLLh DEVICE CHARACTERISTICS This topic, as it affects the safety program, will be discussed primarily by others. 1. It has two effects on our progran: It indicates the relative quantity of radioactive material that may be released. DELETED wm 2. It indicates what isotopes may be present in the effluent. This information may not be important from the standpoint of public exposure, analytical techniques. but is essential - DOE ARCHIVES for proper The gamma spectra of many of the tracer or device activation isotopes weinhiin | 1267) NN > -